What's up everyone
I have a question about the stock turbo;
My '84 MM compressor housing is stamped tc05-10A but I have a wastegate. Everything I've read says the tc05 was only on the 83 non-gated.
Have any of you seen this or am I looking at something that was hodgepodged together?
My truck is also California emmission spec if that makes any difference.
I likely need a rebuild or replacement (also read that the TD units are better and would likely go that route) so I am gathering as much info as possible.

Another question I have is about exhaust size, whats optimal? I was talking with my buddy who's into theory and such with turbos. He said going to big is bad as removing all back-pressure, on an engine that doesn't have the high power output like current or performance stuff, would decrease the amount of tourque made by the boost (paraphrasing from memory). Thoughts?

Thanks in advance
-B